usb host读写U盘！

一个4X4的键盘程序设计，希望能对大家有一定的帮助-A 4X4 keyboard programming, I hope everyone can have some help

键盘示意图键盘示意图

EEPROM仿真器有原理图，源代码等详细说明，是硬件调试的好帮手

ADC0832程序,C51版的,己调试通-ADC0832 procedures, C51 version, debug others pass

采样C语言编写的128×64分辩率的汉字液晶显示驱动程序-C language sampling of 128 x 64 Resolution of the Chinese LCD Driver

玩具故事公仔原代码,能够将故事,是小朋友的好伙伴,已经量产-Toy story doll original code, can be the story of a child a good partner, has been in volume production

功能描述： 利用AT89S51单片机的T0、T1的定时计数器功能，来完成对输入的信号进行 频率计数，计数的频率结果通过8位动态数码管显示出来。要求能够对2－40KHZ 的信号频率进行准确计数，计数误差不超过2/1-Functional Description: Using AT89S51 MCU T0, T1 timing counter function, to complete the input signal frequency counting, counting the frequency of 8 resulted in the adoption of dynamic digital tube display. Request to the 2-40KHZ signal frequency accurately count, counting error of less than 2/1

I2C总线基本操作函数,及几个对I2C总线接口器件24C04操作的函数。 -I2C bus basic operation function, and several of the I2C bus interface device to operate a function of 24C04.

AT89C2051驱动步进电机的电路和源码(用keilC51)-AT89C2051 stepper motor drive circuits and source code (using keilC51)

本程序代码质量较高，包含内容说明上传资料的详细功能等。-The program code of higher quality, containing detailed information on the contents of the instructions to upload functions.